base/applications/rapps/richedit.c

   1 /*
   2  * PROJECT:         ReactOS Applications Manager
   3  * LICENSE:         GPL - See COPYING in the top level directory
   4  * FILE:            base/applications/rapps/richedit.c
   5  * PURPOSE:         RichEdit functions
   6  * PROGRAMMERS:     Dmitry Chapyshev (dmitry@reactos.org)
   7  */
   8
   9 #include "rapps.h"
  10
  11 HWND hRichEdit;
  12 PWSTR pLink = NULL;
  13
  14
  15 VOID
  16 RichEditOnLink(HWND hwnd, ENLINK *Link)
  17 {
  18     switch (Link->msg)
  19     {
  20         case WM_LBUTTONUP:
  21         case WM_RBUTTONUP:
  22         {
  23             if (pLink) HeapFree(GetProcessHeap(), 0, pLink);
  24
  25             pLink = (PWSTR) HeapAlloc(GetProcessHeap(),
  26                                       0,
  27                                       (max(Link->chrg.cpMin, Link->chrg.cpMax) -
  28                                        min(Link->chrg.cpMin, Link->chrg.cpMax))*sizeof(WCHAR));
  29             if (!pLink)
  30             {
  31                 /* TODO: Error message */
  32                 return;
  33             }
  34
  35             SendMessageW(hRichEdit, EM_SETSEL, Link->chrg.cpMin, Link->chrg.cpMax);
  36             SendMessageW(hRichEdit, EM_GETSELTEXT, 0, (LPARAM)pLink);
  37
  38             ShowPopupMenu(hwnd, IDR_LINKMENU);
  39         }
  40         break;
  41     }
  42 }
  43
  44 static VOID
  45 SetRangeFormatting(LONG Start, LONG End, DWORD dwEffects)
  46 {
  47     CHARFORMAT2 CharFormat;
  48
  49     SendMessageW(hRichEdit, EM_SETSEL, Start, End);
  50
  51     ZeroMemory(&CharFormat, sizeof(CHARFORMAT2));
  52
  53     CharFormat.cbSize = sizeof(CHARFORMAT2);
  54     CharFormat.dwMask = dwEffects;
  55     CharFormat.dwEffects = dwEffects;
  56
  57     SendMessageW(hRichEdit, EM_SETCHARFORMAT, SCF_WORD | SCF_SELECTION, (LPARAM)&CharFormat);
  58
  59     SendMessageW(hRichEdit, EM_SETSEL, End, End + 1);
  60 }
  61
  62 static LONG
  63 GetRichEditTextLen(VOID)
  64 {
  65     GETTEXTLENGTHEX TxtLenStruct;
  66
  67     TxtLenStruct.flags = GTL_NUMCHARS;
  68     TxtLenStruct.codepage = 1200;
  69
  70     return (LONG) SendMessageW(hRichEdit, EM_GETTEXTLENGTHEX, (WPARAM)&TxtLenStruct, 0);
  71 }
  72
  73 /*
  74  * Insert text (without cleaning old text)
  75  * Supported effects:
  76  *   - CFM_BOLD
  77  *   - CFM_ITALIC
  78  *   - CFM_UNDERLINE
  79  *   - CFM_LINK
  80  */
  81 VOID
  82 InsertRichEditText(LPCWSTR lpszText, DWORD dwEffects)
  83 {
  84     SETTEXTEX SetText;
  85     LONG Len = GetRichEditTextLen();
  86
  87     /* Insert new text */
  88     SetText.flags = ST_SELECTION;
  89     SetText.codepage = 1200;
  90
  91     SendMessageW(hRichEdit, EM_SETTEXTEX, (WPARAM)&SetText, (LPARAM)lpszText);
  92
  93     SetRangeFormatting(Len, Len + wcslen(lpszText),
  94                        (dwEffects == CFM_LINK) ? (PathIsURLW(lpszText) ? dwEffects : 0) : dwEffects);
  95 }
  96
  97 /*
  98  * Clear old text and add new
  99  */
 100 VOID
 101 NewRichEditText(LPCWSTR lpszText, DWORD dwEffects)
 102 {
 103     SetWindowTextW(hRichEdit, L"");
 104     InsertRichEditText(lpszText, dwEffects);
 105 }
 106
 107 BOOL
 108 CreateRichEdit(HWND hwnd)
 109 {
 110     LoadLibraryW(L"riched20.dll");
 111
 112     hRichEdit = CreateWindowExW(0,
 113                                 L"RichEdit20W",
 114                                 NULL,
 115                                 WS_CHILD | WS_VISIBLE | ES_MULTILINE |
 116                                 ES_LEFT | ES_READONLY,
 117                                 205, 28, 465, 100,
 118                                 hwnd,
 119                                 NULL,
 120                                 hInst,
 121                                 NULL);
 122
 123     if (!hRichEdit)
 124     {
 125         /* TODO: Show error message */
 126         return FALSE;
 127     }
 128
 129     SendMessageW(hRichEdit, EM_SETBKGNDCOLOR, 0, GetSysColor(COLOR_BTNFACE));
 130     SendMessageW(hRichEdit, WM_SETFONT, (WPARAM)GetStockObject(DEFAULT_GUI_FONT), 0);
 131     SendMessageW(hRichEdit, EM_SETEVENTMASK, 0, ENM_LINK | ENM_MOUSEEVENTS);
 132     SendMessageW(hRichEdit, EM_SHOWSCROLLBAR, SB_VERT, TRUE);
 133
 134     return TRUE;
 135 }